Fix for broken first run on fresh installs (#297)

* Fix for broken first run on fresh installs

gaseous-server/Classes/Config.cs

@@ -204,6 +204,8 @@ namespace gaseous_server.Classes
                 Logging.Log(Logging.LogType.Information, "Load Settings", "Loading setting " + SettingName + " from database");
                 
                 try
+                {
+                    if (Database.schema_version >= 1016)
                     {
                         switch ((int)dataRow["ValueType"])
                         {
@@ -219,6 +221,11 @@ namespace gaseous_server.Classes
                                 break;
                         }
                     }
+                    else
+                    {
+                        AppSettings.Add(SettingName, dataRow["Value"]);
+                    }
+                }
                 catch (InvalidCastException castEx)
                 {
                     Logging.Log(Logging.LogType.Warning, "Settings", "Exception when reading server setting " + SettingName + ". Resetting to default.", castEx);
@@ -249,17 +256,22 @@ namespace gaseous_server.Classes
                 }
                 else
                 {
-                    
+                    string sql;
-                    string sql = "SELECT Value, ValueDate FROM Settings WHERE Setting = @SettingName";
                     Dictionary<string, object> dbDict = new Dictionary<string, object>
                     {
                         { "SettingName", SettingName }
                     };
+                    DataTable dbResponse;
 
                     try
                     {
                         Logging.Log(Logging.LogType.Debug, "Database", "Reading setting '" + SettingName + "'");
-                        DataTable dbResponse = db.ExecuteCMD(sql, dbDict);
+
+                        if (Database.schema_version >= 1016)
+                        {
+                            sql = "SELECT Value, ValueDate FROM Settings WHERE Setting = @SettingName";
+                            
+                            dbResponse = db.ExecuteCMD(sql, dbDict);
                             Type type = typeof(T);
                             if (dbResponse.Rows.Count == 0)
                             {
@@ -271,12 +283,31 @@ namespace gaseous_server.Classes
                             {
                                 if (type.ToString() == "System.DateTime")
                                 {
-                                AppSettings.Add(SettingName, dbResponse.Rows[0]["ValueDate"]);
+                                    AppSettings.Add(SettingName, (T)dbResponse.Rows[0]["ValueDate"]);
                                     return (T)dbResponse.Rows[0]["ValueDate"];
                                 }
                                 else
                                 {
-                                AppSettings.Add(SettingName, dbResponse.Rows[0]["Value"]);
+                                    AppSettings.Add(SettingName, (T)dbResponse.Rows[0]["Value"]);
+                                    return (T)dbResponse.Rows[0]["Value"];
+                                }
+                            }
+                        }
+                        else
+                        {
+                            sql = "SELECT Value FROM Settings WHERE Setting = @SettingName";
+                            
+                            dbResponse = db.ExecuteCMD(sql, dbDict);
+                            Type type = typeof(T);
+                            if (dbResponse.Rows.Count == 0)
+                            {
+                                // no value with that name stored - respond with the default value
+                                SetSetting<T>(SettingName, DefaultValue);
+                                return DefaultValue;
+                            }
+                            else
+                            {
+                                AppSettings.Add(SettingName, (T)dbResponse.Rows[0]["Value"]);
                                 return (T)dbResponse.Rows[0]["Value"];
                             }
                         }
@@ -317,8 +348,12 @@ namespace gaseous_server.Classes
         public static void SetSetting<T>(string SettingName, T Value)
         {
             Database db = new Database(Database.databaseType.MySql, Config.DatabaseConfiguration.ConnectionString);
-            string sql = "REPLACE INTO Settings (Setting, ValueType, Value, ValueDate) VALUES (@SettingName, @ValueType, @Value, @ValueDate)";
+            string sql;
             Dictionary<string, object> dbDict;
+                
+            if (Database.schema_version >= 1016)
+            {
+                sql = "REPLACE INTO Settings (Setting, ValueType, Value, ValueDate) VALUES (@SettingName, @ValueType, @Value, @ValueDate)";
                 Type type = typeof(T);
                 if (type.ToString() == "System.DateTime")
                 {
@@ -340,6 +375,16 @@ namespace gaseous_server.Classes
                         { "ValueDate", null }
                     };
                 }
+            }
+            else
+            {
+                sql = "REPLACE INTO Settings (Setting, Value) VALUES (@SettingName, @Value)";
+                dbDict = new Dictionary<string, object>
+                {
+                    { "SettingName", SettingName },
+                    { "Value", Value }
+                };
+            }
 
             Logging.Log(Logging.LogType.Debug, "Database", "Storing setting '" + SettingName + "' to value: '" + Value + "'");
             try

gaseous-server/Classes/Database.cs

@@ -9,6 +9,8 @@ namespace gaseous_server.Classes
 {
 	public class Database
 	{
+		public static int schema_version = 0;
+
 		public Database()
 		{
 
@@ -123,6 +125,9 @@ namespace gaseous_server.Classes
 
 											// run post-upgrade code
 											DatabaseMigration.PostUpgradeScript(i, _ConnectorType);
+
+											// update schema version variable
+											Database.schema_version = i;
 										}
 										catch (Exception ex)
 										{